AURICULELLA, OAHU. 83 



elongate, spire chestnut brown, last whorl having indistinct 

 cinnamon streaks on a much lighter ground. Lip, columella, 

 and callus deep chocolate, parietal and columellar lamellae 

 lighter. Length 9.7, diam. 4.9 mm. 



Oahu: Lanihuli (Cooke). 



This species might be confused with A. pulchra, of which it 

 may perhaps be a variety. It differs in that the last whorl is 

 more elongate and slightly flattened, the base less saccate. 



Of the type form, I have 31 specimens before me which 

 range from 9 to 10.4 mm. in length, and from 4.9 to 5.2 mm. 

 in breadth. The color-pattern is the same in all the speci- 

 mens. Only one specimen is sinistral. 



Of the variety, out of 38 adult specimens (of which five 

 are sinistral), 21 specimens have the dark lip, etc. ; 7 approach 

 the typical color-pattern except that the first three whorls 

 are darker colored. 



This species has only been found on two of the higher peaks 

 of the main mountain range of Oahu, from about 2,000 to 

 3,000 feet. It is not abundant in either of the two localities. 



7. A. PULCHRA Pease. PI. 23, figs. 5 to 20. 



' i The shell is solid, ovate, dextral, perforate, longitudinally 

 striate ; whorls 6, flatly convex, the last subinflated ; suture 

 impressed, aperture subaurif orm ; lip thickened, reflexed, ex- 

 panded, with the margins united by a thick callus; parietal 

 lamella prominent; columella reflexed above the umbilicus; 

 with a thick fold; white, encircled by a greenish band, lip 

 brownish. Length 10, diam. 6 mm." (Pease.) 



"Var. Pale straw-color, lip white ." (Pease.) 



Oahu: Western ridge of Nuuanu (Cooke, Pilsbry) ; Mauna- 

 kope (Thaanum) Halawa and Koneleau ridge near summit 

 (Thaanum) ; Waimano-Manana ridge at summit (Spalding, 

 Pilsbry) ; Waiawa, Kalaikoa, Ahonui, Wahiawa, Helemano, 

 Kawailoa, Opaeula, Pupukea, Waiaiee (Gulick) ; Poamoho 

 (Thaanum) ; on the north side at Kahaluu and Hakipuu 

 (Gulick), and Kaliuwaa (Thaanum). 



Auriculella pulchra PEASE, Journ. de Conchyl., xvi, 1868, 

 p. 346, pi. 14, fig. 6. PFR., Mon. Hel. Viv., viii, p. 212. 



